Portable charger



FIG. 1 is a top right perspective view of a portable charger showing mynew design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof.

The broken lines in the figures depict portions of the article whichform no part of the claimed design.

CLAIM The ornamental design for a portable charger, as shown anddescribed.